it may be an unknown word issue. If a word is unknown, it doesn't have 
translation model scores.

there may be a few unknown words for this particular sentence as its 
full of numbers and code

Felipe Sánchez Martínez wrote:
> Hi Philip,
>
> Notice that in the example I gave the number of phrase pairs used is 22.
>
> --
> Felipe.
>
> El mié, 16-09-2009 a las 16:24 +0100, Philipp Koehn escribió:
>   
>> Hi,
>>
>> the phrase penalty is part of the translation model - in a very
>> crude way: each phrase pair entry has a 5th scoring component
>> which is 2.76, which is almost e. Hence if there are 17
>> phrase pairs used, the log score is 16.9982 (log 2.76^17).
>>
>> -phi
>>
>> 2009/9/16 Felipe Sánchez Martínez <[email protected]>
>>         Hi there,
>>         
>>         How is calculated the phrase penalty? In my n-best list I have
>>         the
>>         following hypothesis (I have used # to divide the translation
>>         in the
>>         phrases used, maybe it helps)
>>         
>>         1 ||| el siguiente punto es # la recomendación para la segunda
>>         lectura
>>         ( #a4-0294 # / 96 # ) en nombre de la comisión # de
>>         transportes y
>>         turismo , # sobre la posición común adoptada por el # consejo
>>         # con
>>         vistas a la adopción de # una directiva del consejo sobre # el
>>         equipamiento marino # ( # c4-0370 # / # 96-95 # / # 0163 # ( #
>>         syn # ) )
>>         ( ponente : # sr. kaklamanis # ) .||| d: 0 -7.54513 0 0
>>         -5.7395 0 0 lm:
>>         -353.572 tm: -3.94358 -37.6388 -5.04752 -57.4153 16.9982 w:
>>         -64
>>         
>>         According to this the phrase penalty is 16.9982. How is this
>>         value
>>         calculated?
>>         
>>         Thank you very much in advance
>>         Regards
>>         --
>>         Felipe
>>         
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>>     
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